To decorate your Christmas tree ornaments, start by choosing a theme or color scheme for your tree. You can create a cohesive look by using ornaments in complementary colors or designs. Hang your ornaments in a balanced way, using a combination of large and small ornaments to create depth and visual interest. You can also use string lights to add a pop of sparkle and shine. Finally, don't forget to add some personal touches, such as handmade ornaments or keepsakes that have special meaning to you.